Surgical instrument.



L. R. KRUGER.

SURGICAL INSTRUMENT.

APPLlcATloN FILED DEC. n. 1915.

152O2,193. Pmetedot. 24,1916.

2 SHEETS-SHEET l.

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L. R. KRUGER.

SURGICAL INSTRUMENT. n APPLICATION FILED DEC. Il, l9l5.

2 SHEETS-SHEET 2.

lllllll Y SAS LOUIS R. KRUGR, OF CHICAGO, ILLINOIS.

' SURGICAL INSTRUMENT.

Specification of Letters Patent.

vPatented. Oct. 24, 1916.

Application filed December 11, 1915. Serial No. 66,231.

T0 all whom t may concern.'

Be it known that I, Louis R. KRUGER, a citizen of the Republic of Switzerland, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Surgical' Instruments, of which' the following is a specification. f

My invention relates to surgical instruments and has especial reference to expandible douche points for use in or-iicial surgery for expanding orilices of the human body and for directing suitable liquid thereinto.

One of the objects of my invention is to generally improve devices vof this character and especially to .improveand cheapen the structure disclosed in United States Letters Patent No. 1,048,069, granted to Elmer E. Hall, December 24, 1912. y

Other, further and more specilic objects .ofiny invention will become readily apparent, to vpersons skilled in the art, from a consideration of the .following description when taken in conjunction with the drawings Wheremee Figure 1 is a vertical central section of the device taken on line '1-1 of Fig. 5. Fig. 2 is an elevation showing parts in section. Fig. L.3 is a .transverse section taken on line 3-3 of Fig. 1. Fig. is a transverse section taken on line 4 -4 of Fig. 1. Fig. 5 is a transverse 4section taken on line 5-5 of Fig. 1. Fig. 6 is a side elevation of one of the fingers. Fig. 7 is a perspective view of the casing to which lthe lingers are pivoted and by whieh they arelguided in ,their movements. Fig. 8 is a 4perspective view of a nozzle bearing and support. Fig. 9 is a plan view of the finger actuating cam. Fig. 10 is a kperspective view of the spring latch for holding the assembled parts together.

In all the views the same reference characters are employed to indicate similar parts. My invention is particularly concerned with certain details ofconstruction of the device herein illustrated, wherebyto "con- .tribute to the `reduction of cost of construc- The:l general character of ,the device is similar in many of its-parts to that disclosed in the aforesaid Hall patent. i

v'Jhe nozzle ,bearing Supporti() eensetepf a tube of cylinder 11, expanded at one end into a laterally extending liange 12 and formed into a tubular or cylindrical, integral bearing 13 joined to the cylinder 11 by arms 141 leaving spaces therebetween. In the wall of the cylinderportion 11 there are oppositely disposed openings 15-15 to -receive the tongue of the spr-ing latch which holds the parts in assembled position. rlfhe cylinder 11 is hollow up to the bearing thimkbleL 18 to ypermit shortening of the nozzle tube and the thimble is hollow to provide a l bearing for the tube or nOZZle 16 which is mounted to be longitudinally slid within and. up to the bearing 13. v

,The outerk free end ef the nozzle tube 16 is provided with a groove 17 which is made, preferably hy indenting the tube near its end 18 to receive the collar y19 of the nozzle tip 20, The inner .edge of the collar 19 is nturned, es at 2,1, andY iS also'axially slotted. ae at 22 t0 permit eXpanSiOn when lslipped onto the tube 1 6. The end 18 of Vthe tube 16 is Ythen forced into the collar 19 which will expand slightly when the inturned edge 21 will snap intoA the annular groove 17 provided upon the tube, after which the tip cannot beremoved., This prevents accidental removal of the tip and provides a very' ycheap and eliicient means for joining the two parts together. The tipv20 isl provided with a suitable number of discharge slits or .openings 24 which are extended in the direction of the ,axis of the nozzle ,tube 16. Theouter end of the nozzle tube 16 is threaded to receve sleeve 25 which has ya series 0i tapered shoulders 26 adaptedwto receive and hold a exible Supply tube 2.7-

The finger-actuating @am o1'- dsk 2S shown in Fig. k9 is provdedvith .e central opening 29., The Structure isk comprised of tirely through saidgplate yto engagethe inner ends of the lingers VIt is alsoprovided with a cover .plate 33 which is inturned at its peripheral edge, as at 31, to cover the edge of the cam plate Board t0 Aprovide asintable'surface forl nurling. By making this structure of twoparts and -by perf-orating the cam plate- 30, to provide the. cam open- Y- ings or slots 31, a betten cheaper and stronger cam 1s thus provided, than lwhen grooves are cut into or only part vway f through a .Single plete, and a more ornemen- :tal appearance be given `to the Strueture, as a whole. In assembling, the cam 28, it is placed over the cylinder 11 of the nozzle bearing structure l() upon which it has ro-V tatable support, the outer plate 33 being inturned to provide a bearing flange 34 thereby enlarging the bearing surface of the f cam disk and providinga smooth ,continution37 from eachof the spring latches 38, n will snap into the respective openings, as

clearly shown in Fig. 1. y

Projecting from the lower end of thetubular casing35 is a four-part flange 39, preferably square in peripheral outline." Projecting laterally'from the upper end of the said casing isan upper four-part Harige 40, preferably circular in peripheral outline. In the flangej39'there are-four finger guiding slots 42.,v lThese slots yserve as means for guiding theinner ends of the fingers 32, and in the upper flange 40there are corresponding registering or alining slots 43 in which the fingers 32 are pivoted.,

The latch spring 38, two of which are used to hold the assembledpparts together, is provided with an integral tongue or projection 37 whichA takes'through the openings 15 and 36in the structures l() and 35, respectively, and is bent upon itself, as at 44, to formv two arms 45 and 46 0f substantially equallength. `The arm 46 is pierced and a tongue 37 isfpressed outwardly therefrom being an integral part of the said arm. Projecting outwardlyfrom the arm 45 is a boss or thumb button 47. `In assembling the parts the spring latch 38 is Vplaced against the tubular casing 35, the lower end 44 resting upon aflange 39, of the casing with the tongues 37`-37 projecting into the registerfing openings 15 and 36 so as to hold the i parts together. Over and about the latch spring y38 is placed av frusto-conical cover 50 having openings 5l, in-i'ts opposite walls 52,

into whichthe knobs'or thumb buttons 47 to hold the cover in place.

ofthe latch spring 38 are adapted to snap A plurality of fingers 32,-the drawings showingfour in this"` case but of which any desired `number `may be employed, other i Y parts of the structure being varied for this` purposef-are located betweenthe cover 50 and the tubular casing 35. The fingers 32 arefulcrumed in the notches 43 ofthe later-Ay ally extending upper flange 40 provided in the casing 35. The lingers are provided with notches 54 which fit the wall of the flange 40 on either side of the notches 43. The lower ends of the fingers 32 are guided in their radial movementsin the notches 42 between the respective members of the flange 39. The notches 43 prevent any longitudinal movement of the fingers andthe guides 42 prevent anylateral movement thereof. The fingers 32 are of substantially uniform width so that they may be made of strips of sheet metal of uniform width without loss of material. yThe inner ends of the fingers terminate in tenons, or tips '56, which enter the cam slots 31 f the finger actuating cam 28.

- When the cam disk 28 is rotated, the cam slots 31 thereof will engage tenons 56 of the fingers 32 and cause the free outer ends of the fingers to be brought together, or to be expanded or extended, depending upon the direction of rotation ofthe actuating disk 28. Fig. 2 shows in full lines the open position of the fingers 32 and in dotted lines the closed position thereof.

/ The latch spring 38 serves as a means for holding the Vtubular casing 35, the nozzle bearing 10 and the cover 50 in their proper relative positions. These parts may easily be separated, thereby permitting the instrument to be taken down for cleaning, by simply pressing the two thumb buttons 47 into the respective perforations 51 provided in said cover and simultaneously moving the cover toward the operative or outer end of the instrument. v

As the result of the taper in the walls 52 of the cover 50 the latch spring 38 will thereby be compressed when the cover is slid to place and the thumb buttons 47, when they are `brought opposite the openings 51 provided in the cover 50, will snap into said openings thereby holding the cover in place.

TheI use and operation of the device is similar to that described in the aforesaid Hall patent.

The device is intended to be made ofthe best 18 per cent. German silver metal, which is not, to an objectionable extent, subject to corrosion or oxidation, with all of the sharp edges removed, as by tumbling, so as not to cut orinjure any of the tissue with which the instrument may be brought in contact.

Having described my invention, what I claim is:

1. In a device of the character described, a casing; a nozzle-bearing support therein,

Vcomprising two coaxially arranged integral,

one-piece spring-latch having integral'parts connecting said casing, nozzle bearing support and cover to hold them in assembled position.

2. In a device of the character described, a casing; a cylindrical nozzle-bearing support therein; a cover inclosing the casing and nozzle bearing support; a one-piece springlatch having integral parts connecting said casing, nozzle bearing support and cover to hold them in assembled position; an axially perforated cam-disk in axial juxtaposition to the cylinder of said nozzle support comprising a plate having a series of arcuate slots extending through said plate and from near its central perforation toward its edge and an overlying cover plate turned at its peripheral edge over said plate and inturned through the axial perforation thereof to provide an axially extending bearing flange and a series of fingers pivoted on one end of said casing and having their inner ends extend- LOUIS R. KRUGER.4

In the presence of- FORE BAIN, MARY F. ALLEN.

Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patents,

Washington, D. C.

It is hereby oertied that Letters Patent No. 1,202,193, granted October 24,

1916, upon the application of Louis R. Kruger, of Chicago, Illinois, for an improvement in Surgical Instruments, Were erroneously issued to the inventor, Whereas said Letters Patent should have been issued to the inventor, said Kruger, and J 07m W. Morsbach cmd Carl Haberrorn, as assignees, jointly, each being owner yof onethird interest in said invention as shown by the record of assignments in this oice; and that the saidLetters Patent should be readyWith this correction thereinthat the same may conform to the record of the ease in the Patent Ofi-ice.

Signed and sealed this 28th day of November, A. D., 1916.

' i l F. W. n. CLAY,

Acting Commissioner of Patents.

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